MID ESSEX HOSPITAL SERVICES NHS TRUST / SCIENCE PHOTO LIBRARY MID ESSEX HOSPITAL SERVICES NHS TRUST / SCIENCE PHOTO LIBRARY
Psoriasis. Close-up of psoriasis affecting the hand of a 65-year-old male patient. Psoriasis is an autoimmune disease in which skin cells are produced much faster than normal. The body cannot shed the cells fast enough, resulting in patches (plaques) of scaly, thick skin, which are often itchy and may become infected.
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